Dust-guard.



729,307. I l Patented May-26,1903. UNITED STATES, PATENT OFFICE.

RICHARD J. EVANS, OF FRANKLIN, PENNSYLVANIA, ASSIGNOR TO FRANK- LIN MFG.CO., OFl FRANKLIN, PENNSYLVANIA.

DUST-GUARD.

SPECIFICATION forming part4 of Letters Patent No. 729,307, dated May 26,1903.

Application led January 5,1903. Serial No. 137,872. (No model.)

To all whom it may concern: against the journal or shaft regardless ofthe Be it known that I, RICHARD J. EVANS, a extent of wear of the wallof opening c. It citizen of theUnited States,residingatFrank will benoticed that the wire is in a single lin, in the county of Venango andState of piece. Consequently the cost f production 5 Pennsylvania,haveinvented certain newand is lessened and there is no liability todis- 55 useful Improvements in Dust Guards, of order. Y

which the following is a specification, refer- While the guard-sectionsmay be made of ence being had therein to the accompanying any suitablematerial, I prefer to use a {iredrawings. proof substance, such asasbestos. It has Io Thisinvention relates to an improved guard neverbefore, so far as I am aware, been pro- 6o for preventing the entranceof dust and other posed to construct a dust-guard wholly of foreignsubstances to the journal-boxes and this material, whereas by experimentI have the journals of railway-car axles and also to found that asidefrom the quality of being the shafts of engines, motors, dynamos, andvabsolutely flreproof there is no charring or other machinery.deterioration as the result of a heated jour- 65 The nature of theimprovements will be nal or shaft. Moreover, the material resistsreadily comprehended, reference being had wear, will absorb thelubricant, and will not to the following detailedV description and towarp or disintegrate. the accompanying drawings, in which- I claim as myinventionzo Figure l is a perspective view of a dustl. A dust-guardconsisting of two slidably- 7o guard embodying my invention. Fig. 2 is ajoined sections havingajournal or shaft openfront elevation of the guardapplied to an ing and each havinga groove in its side edges axle-journalor a shaft. Fig. 3 is a view simiand the lower section having a groovein its lar to Fig. 2, partly in section, with the jourbottom edge,andthe upper section having a nal-opening of the guard slightly worn.Figt recess centrally in its top,'and a binding-wire 75 is a perspectiveview of the spring connection connecting the sections and havingstraight for the guard-sections. v l Y side and bottom portions,seatedinthe grooves,

Referring to the drawings Aby letter, A de' and integral spring endseach projecting at notes the guard, which is formed in two an angle froman extension of a side portion 3o parts or sections a a', lapped at b band havand engaging the recess in the top of the up- 8o ing the circularopening c for the journal or per guard-section. Y shaft. The bottom edgeof the lower guard- 2. A dust-guard consisting of two slidablysection aand the side edges of both sections joined sections of asbestos having ajournal are grooved, as at a2, and in the top of the or shaft openingand each havinga groove in 55 upper section ct is a central opening 0.3.its side edges and the lower section havinga 85 The upper and lowerguard-sections are groove in its bottom edge, and the upper secconnectedtogether by abinding-wire D,which tion having a recess centrally in itstop, and a occupies the groove a2. The upper portions binding-wireconnecting the sections and havd d of the wire beyond the upper section'are ing straight side and bottom portions, seated 4o downwardlyinclined and terminate in abin the grooves, and integral spring endseach 9o ruptly-bent ends d d', which enter the openprojecting at anangle from an extension of a ing a3. By reference to Figs. l and 3 itwill side portion and terminating in downwardlybe observed that the sideportions d2 d2 of the bent ends engaging the recess in the top of the vwire extend some distance above the vtop of upper guard-section.

the upper guard-section, permitting a range In testimony whereof I affixmy signature 95 of movement of the latter to compensate for in presenceof two witnesses.

wear. The material of the wire is such as RICHARD J. EVANS. will causethe ends dd' to press with a spring Witnesses: A action against the topof lthe upper guard, F. M. SIMPKINS,

5o whereby the guard-sections are forced tightly WM. S. TAFT.

